389028530 has 32 divisors (see below), whose sum is σ = 765866880. Its totient is φ = 141102720.

The previous prime is 389028529. The next prime is 389028551. The reversal of 389028530 is 35820983.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40667 + ... + 49313.

It is an arithmetic number, because the mean of its divisors is an integer number (23933340).

Almost surely, 2^389028530 is an apocalyptic number.

389028530 is a deficient number, since it is larger than the sum of its proper divisors (376838350).

389028530 is a wasteful number, since it uses less digits than its factorization.

389028530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9074.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 389028530 is about 19723.8061742657. The cubic root of 389028530 is about 730.0072120386.

The spelling of 389028530 in words is "three hundred eighty-nine million, twenty-eight thousand, five hundred thirty".